DZL type horizontal chain coal - fired steam boiler
Specification model: 1 -- 20 tons
Thermal efficiency: 81.8%
Applicable fuel: coal,biomass pellet
Application: medicine, chemical industry, light industry, textile, building materials, breeding, food and beverage, plastic foam, printing washing, rubber processing, paper making, wood processing, hotels, hotels, clothing, etc.

Automatic Moving Grate Biomass Fired Steam Boiler is horizontal single-drum shell boiler with water-fire tubes. It has chain grate as burning device, upper-in-and-upper-out style natural water circulation with ejection for hot water boiler of this series, the right and left side of furnace as radiant heating surface, two wings of furnace and threaded smoke tubes as convection heating surface and three-dimensional shield shell. Furnace is divided by Smoke baffle wall into combustion chamber (firebox) at front and reburning chamber at back.

biomass fired steam boiler after improvement takes use of structure of wing type smoke duct, one-way screwed smoke tube, arched tube plate, smoke and gas separate room and several other advanced technology, which has increased the water circulation speed and safety factor. This boiler series is well designed, compactly made up, quickly installed, mono layer, so that the civil engineering and investment could be saved. With these improvement, the boiler's working life extend much to be the national energy saving product.

-automatic fuel feeding duel to chain grate design;
-high efficiency due to big heating surface and grate area;
-low emission,friendly to environment;
-wide fuel adaptability, applicable for wood pellet, coal, palm nuts, etc;
-intelligent boiler controller with PLC and touch screen, easy for operation and parameters setting;
-good looking & long life span;

FAQ

1.What is the size of furnace door and blower hopper?
Size of furnace door:
Standard elliptical furnace door:300*800*1500
Blower hopper size:
2 tons conical hopper: 1400*800*1500
4 tons conical hopper: 2200*1400*1500

2.What is the combustion mode of coal/biomass fired boiler?
The combustion mode of coal/biomass fired boiler is layer combustion. Place the flue on the fixed or moved grate, to form an evenly fuel bed with a certain thickness, air comes from the bottom of grate, and combustion occurred on the fuel bed.

3.Material of boiler drum / steel plate / tube.
Boiler drum material: Q245R,carbon steel, executive standard: GB713-2008
Tube material: 20# seamless steel pipe, carbon steel, executive standard: GB3087-2008
Still kettle material: Q345R, alloy steel, executive standard: GB713-2008

4.What is the height of chimney?
The chimney is usually 30m, irrespective of the special circumstances.

5.What are the heat-resistance temperature of grate and furnace?
The heat resistance temperature of grate is related to the grate material, the highest temperature could be as high as 1100℃, and the lower temperature could be 700℃.

6.What is the temperature of smoke gas?
The highest temperature of smoke gas is 165℃.

7.How long can the coal/biomass fired boiler works?
Coal/biomass boilers could work for 10~15 years, under correct operation, high water and coal quality, etc.

8.How to avoid collapse of bricks, and what should be done if it happened?
When boiler installation finished, drying the boiler according to the manual, it’s very important to avoid collapse of bricks.

9.How many stokers do I need for one boiler?
Usually 3 person, every 8 hours a shift.